font settings

Font Size: Large | Normal | Small
Font Face: Verdana | Geneva | Georgia

Elodea

(Genus)

Overview

[ Back to top ]

Plants perennial, of fresh waters. Rhizomes and stolons absent. Erect stems rooted in substrate, branched or unbranched, elongate. Leaves cauline, whorled, 3--7 at each node, or leaves opposite at 4+ proximalmost nodes, submersed, sessile; blade linear to linear-lanceolate, apex acute; midvein without lacunae along side(s), blade uniform in color throughout;; abaxial surfacely without prickles or aerenchyma; intravaginal squamules entire. Inflorescences solitary, sessile; spathes not winged. Flowers unisexual, staminate and pistillate on different plants, or rarely bisexual, usually projected to surface of water by elongate floral tube base, sessile; petals white. Staminate flowers: filaments distinct or 3 inner connate ½ their length; anthers oval; pollen in monads or tetrads. Pistillate flowers: ovary 1-locular; styles 3, not 2-fid. Fruits ovoid to lance-ellipsoid, smooth, dehiscing irregularly. Seeds cylindric to fusiform, glabrous to hirsute.

Species 5: North America, Central America, South America, Europe.[1]

Photos

[ Back to top ]

Taxonomy

[ Back to top ]

The Genus Elodea is further organized into finer groupings including:

Bibliography

[ Back to top ]

Footnotes

[ Back to top ]
  1. "Elodea". in Flora of North America Vol. 22. Oxford University Press. Online at EFloras.org.

Sources

[ Back to top ]
Last Revised: October 04, 2013
2013/10/04 00:09:15